<div class="demo demo-space">
  <span nz-icon nzType="home"></span>
  <span nz-icon nzType="setting" nzTheme="fill"></span>
  <span nz-icon nzType="smile" nzTheme="outline"></span>
  <span nz-icon nzType="sync" nzSpin></span>
  <span nz-icon nzType="smile" nzTheme="outline" nzRotate="180"></span>
  <span nz-icon nzType="loading"></span>
</div>
